What happened to the U. S. dollar when President Nixon closed the gold window?

A. it baca me part of a total fiat system
B. it became part of a total commodity system
C. it became part of a partial fiat system
D. it became part of a partial commodity system

A. It became part of a total fiat system

Explanation:

Apex

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

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